-std=c++0x vs -std=gnu++0x

Stephan Bergmann sbergman at redhat.com
Thu Feb 23 08:39:35 PST 2012

On 02/23/2012 05:08 PM, Lubos Lunak wrote:
>   commit 437fe5a444411f68d1848c49121394f16f09611b made me notice that we
> actually build with -std=c++0x and not -std=gnu++0x, which I think would make
> more sense and be consistent with the case when we do not build in C++0x
> mode.
>   If you look at the gcc manpage for the description of -std, you'll notice
> that the C++ default is gnu++98, and c++98 is switched to also by
> using -ansi. So if we default to c++0x, we pretty much default to the more
> strict -ansi, only in C++0x mode. That should mean that gcc is more strict
> than its default and e.g. some of its extensions are disabled.

Argh, yes, failed to note that when I prepared the patch linked above.

>   Any objections to switching to gnu++0x ?

Sounds good.


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